I had a similar situation, except the opposite (girl attacking the boy). I swapped pouches for 2 months straight & tried about 5 introductions total in the bath tub before she finally warmed up to him. There's no quick fix, and they may never get along, so keep this in mind. Don't put her on his cage or vise versa, that cage is 'his' and her crawling all over it is something he's clearly not okay with, I think you're doing too much too fast. Start slow, like I said, this may take some time. I'd keep them in separate bonding pouches, tuck one inside your shirt, and the other on the outside, this way they can smell each other but can not see or harm one another. Switch the punches in their cages, put his pouches in her cage, and hers in his, swap after 2 days or so & keep repeating. Don't put the cages too close to one another, they can pull eachother and bite, at least 2 ft apart. After about a month of this try introducing them in your bath tub, be prepared to sperate them in case they ball up. If the intro doesn't work well, repeat all steps until the next intro. It is hard and stressful introducing gliders, its better to get them together. I know this isn't always possible, you just have to be prepared for the work ahead. Best of luck